h264_metadata: Add option to delete filler data
[libav.git] / libavfilter / vf_transpose.c
1 /*
2 * Copyright (c) 2010 Stefano Sabatini
3 * Copyright (c) 2008 Vitor Sessak
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * transposition filter
25 * Based on MPlayer libmpcodecs/vf_rotate.c.
26 */
27
28 #include <stdio.h>
29
30 #include "libavutil/imgutils.h"
31 #include "libavutil/internal.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/pixdesc.h"
35
36 #include "avfilter.h"
37 #include "formats.h"
38 #include "internal.h"
39 #include "video.h"
40
41 enum TransposeDir {
42 TRANSPOSE_CCLOCK_FLIP,
43 TRANSPOSE_CLOCK,
44 TRANSPOSE_CCLOCK,
45 TRANSPOSE_CLOCK_FLIP,
46 };
47
48 typedef struct TransContext {
49 const AVClass *class;
50 int hsub, vsub;
51 int pixsteps[4];
52
53 enum TransposeDir dir;
54 } TransContext;
55
56 static int query_formats(AVFilterContext *ctx)
57 {
58 enum AVPixelFormat pix_fmts[] = {
59 AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA,
60 AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA,
61 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
62 AV_PIX_FMT_RGB565BE, AV_PIX_FMT_RGB565LE,
63 AV_PIX_FMT_RGB555BE, AV_PIX_FMT_RGB555LE,
64 AV_PIX_FMT_BGR565BE, AV_PIX_FMT_BGR565LE,
65 AV_PIX_FMT_BGR555BE, AV_PIX_FMT_BGR555LE,
66 AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_GRAY16LE,
67 AV_PIX_FMT_YUV420P16LE, AV_PIX_FMT_YUV420P16BE,
68 AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUV422P16BE,
69 AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUV444P16BE,
70 AV_PIX_FMT_NV12, AV_PIX_FMT_NV21,
71 AV_PIX_FMT_RGB8, AV_PIX_FMT_BGR8,
72 AV_PIX_FMT_RGB4_BYTE, AV_PIX_FMT_BGR4_BYTE,
73 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P,
74 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
75 AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
76 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P,
77 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUVJ440P,
78 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_GRAY8,
79 AV_PIX_FMT_NONE
80 };
81
82 ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
83 return 0;
84 }
85
86 static int config_props_output(AVFilterLink *outlink)
87 {
88 AVFilterContext *ctx = outlink->src;
89 TransContext *trans = ctx->priv;
90 AVFilterLink *inlink = ctx->inputs[0];
91 const AVPixFmtDescriptor *desc_out = av_pix_fmt_desc_get(outlink->format);
92 const AVPixFmtDescriptor *desc_in = av_pix_fmt_desc_get(inlink->format);
93
94 trans->hsub = desc_in->log2_chroma_w;
95 trans->vsub = desc_in->log2_chroma_h;
96
97 av_image_fill_max_pixsteps(trans->pixsteps, NULL, desc_out);
98
99 outlink->w = inlink->h;
100 outlink->h = inlink->w;
101
102 if (inlink->sample_aspect_ratio.num)
103 outlink->sample_aspect_ratio = av_div_q((AVRational) { 1, 1 },
104 inlink->sample_aspect_ratio);
105 else
106 outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
107
108 av_log(ctx, AV_LOG_VERBOSE,
109 "w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n",
110 inlink->w, inlink->h, trans->dir, outlink->w, outlink->h,
111 trans->dir == 1 || trans->dir == 3 ? "clockwise" : "counterclockwise",
112 trans->dir == 0 || trans->dir == 3);
113 return 0;
114 }
115
116 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
117 {
118 AVFilterLink *outlink = inlink->dst->outputs[0];
119 TransContext *trans = inlink->dst->priv;
120 AVFrame *out;
121 int plane;
122
123 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
124 if (!out) {
125 av_frame_free(&in);
126 return AVERROR(ENOMEM);
127 }
128
129 out->pts = in->pts;
130
131 if (in->sample_aspect_ratio.num == 0) {
132 out->sample_aspect_ratio = in->sample_aspect_ratio;
133 } else {
134 out->sample_aspect_ratio.num = in->sample_aspect_ratio.den;
135 out->sample_aspect_ratio.den = in->sample_aspect_ratio.num;
136 }
137
138 for (plane = 0; out->data[plane]; plane++) {
139 int hsub = plane == 1 || plane == 2 ? trans->hsub : 0;
140 int vsub = plane == 1 || plane == 2 ? trans->vsub : 0;
141 int pixstep = trans->pixsteps[plane];
142 int inh = in->height >> vsub;
143 int outw = out->width >> hsub;
144 int outh = out->height >> vsub;
145 uint8_t *dst, *src;
146 int dstlinesize, srclinesize;
147 int x, y;
148
149 dst = out->data[plane];
150 dstlinesize = out->linesize[plane];
151 src = in->data[plane];
152 srclinesize = in->linesize[plane];
153
154 if (trans->dir & 1) {
155 src += in->linesize[plane] * (inh - 1);
156 srclinesize *= -1;
157 }
158
159 if (trans->dir & 2) {
160 dst += out->linesize[plane] * (outh - 1);
161 dstlinesize *= -1;
162 }
163
164 for (y = 0; y < outh; y++) {
165 switch (pixstep) {
166 case 1:
167 for (x = 0; x < outw; x++)
168 dst[x] = src[x * srclinesize + y];
169 break;
170 case 2:
171 for (x = 0; x < outw; x++)
172 *((uint16_t *)(dst + 2 * x)) =
173 *((uint16_t *)(src + x * srclinesize + y * 2));
174 break;
175 case 3:
176 for (x = 0; x < outw; x++) {
177 int32_t v = AV_RB24(src + x * srclinesize + y * 3);
178 AV_WB24(dst + 3 * x, v);
179 }
180 break;
181 case 4:
182 for (x = 0; x < outw; x++)
183 *((uint32_t *)(dst + 4 * x)) =
184 *((uint32_t *)(src + x * srclinesize + y * 4));
185 break;
186 }
187 dst += dstlinesize;
188 }
189 }
190
191 av_frame_free(&in);
192 return ff_filter_frame(outlink, out);
193 }
194
195 #define OFFSET(x) offsetof(TransContext, x)
196 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM
197 static const AVOption options[] = {
198 { "dir", "Transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = TRANSPOSE_CCLOCK_FLIP },
199 TRANSPOSE_CCLOCK_FLIP, TRANSPOSE_CLOCK_FLIP, FLAGS, "dir" },
200 { "cclock_flip", "counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK_FLIP }, .unit = "dir" },
201 { "clock", "clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK }, .unit = "dir" },
202 { "cclock", "counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK }, .unit = "dir" },
203 { "clock_flip", "clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP }, .unit = "dir" },
204 { NULL },
205 };
206
207 static const AVClass transpose_class = {
208 .class_name = "transpose",
209 .item_name = av_default_item_name,
210 .option = options,
211 .version = LIBAVUTIL_VERSION_INT,
212 };
213
214 static const AVFilterPad avfilter_vf_transpose_inputs[] = {
215 {
216 .name = "default",
217 .type = AVMEDIA_TYPE_VIDEO,
218 .filter_frame = filter_frame,
219 },
220 { NULL }
221 };
222
223 static const AVFilterPad avfilter_vf_transpose_outputs[] = {
224 {
225 .name = "default",
226 .config_props = config_props_output,
227 .type = AVMEDIA_TYPE_VIDEO,
228 },
229 { NULL }
230 };
231
232 AVFilter ff_vf_transpose = {
233 .name = "transpose",
234 .description = NULL_IF_CONFIG_SMALL("Transpose input video."),
235 .priv_size = sizeof(TransContext),
236 .priv_class = &transpose_class,
237 .query_formats = query_formats,
238 .inputs = avfilter_vf_transpose_inputs,
239 .outputs = avfilter_vf_transpose_outputs,
240 };